Messages in this thread | | | From | KOSAKI Motohiro <> | Date | Wed, 19 Sep 2012 14:05:20 -0400 | Subject | Re: [PATCH] memory-hotplug: fix zone stat mismatch |
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On Wed, Sep 19, 2012 at 3:29 AM, Minchan Kim <minchan@kernel.org> wrote: > During memory-hotplug stress test, I found NR_ISOLATED_[ANON|FILE] > are increasing so that kernel are hang out. > > The cause is that when we do memory-hotadd after memory-remove, > __zone_pcp_update clear out zone's ZONE_STAT_ITEMS in setup_pageset > without draining vm_stat_diff of all CPU. > > This patch fixes it.
zone_pcp_update() is called from online pages path. but IMHO, the statistics should be drained offline path. isn't it?
thanks.
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